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GlossaryEstrogenic Activity

ability of a substance to mimic or influence estrogen effects

Estrogenic activity refers to the ability of a substance to mimic or influence the effects of estrogen, a primary female sex hormone, in the body. This can impact various biological processes, including reproductive health, bone density, and hair growth. Substances with estrogenic activity can bind to estrogen receptors and trigger similar responses as natural estrogen, which is why they are significant in both medical treatments and environmental health studies.

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Research

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Early Androgen Activity After Birth Determines the Hypothalamic Expression of Androgen and Estrogen Receptors in Adulthood in Female but Not in Male Rats

research Early androgen activity after birth determines the hypothalamic expression of androgen and estrogen receptors in adulthood in female but not in male rats

July 2025 in “Reproductive Biology and Endocrinology”

Early androgen exposure affects hormone receptor expression in adult female rats' brains, but not in males.

research PSAT217 Estrogen Deficiency as a Cause of Decreased 1- alpha - hydroxylase Activity

November 2022 in “Journal of the Endocrine Society”

Estrogen deficiency can reduce the enzyme activity needed to activate vitamin D.

research Mechanism of action of bolandiol (19-nortestosterone-3β,17β-diol), a unique anabolic steroid with androgenic, estrogenic, and progestational activities

11 citations , November 2009 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology”

Bolandiol, a synthetic steroid, builds muscle and bone without greatly affecting sex glands, and works differently from other hormones.

research Estrogenic Potential of 2-Alkyl-4-(thio)chromenone 6-O-Sulfamates: Potent Inhibitors of Human Steroid Sulfatase

37 citations , September 2003 in “Journal of Medicinal Chemistry”

A substance called Compound 2g can strongly block STS (a hormone-related enzyme) without affecting estrogen levels, making it potentially good for treating breast cancer.

Hormonal Activity in Commonly Used Black Hair Care Products: Evaluating Hormone Disruption as a Plausible Contribution to Health Disparities

research Hormonal activity in commonly used Black hair care products: evaluating hormone disruption as a plausible contribution to health disparities

25 citations , May 2021 in “Journal of exposure science & environmental epidemiology/Journal of exposure science and environmental epidemiology”

Common Black hair care products may affect hormone levels and potentially impact health, especially in reproductive and metabolic areas.

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Community Join

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community Theaflavin (Black Tea Extract) reduce DHT, androgen receptor activity and estrogen

in Research/Science 8 upvotes 3 years ago

Theaflavin, a black tea extract, may inhibit DHT and androgen receptor activity, but its effectiveness for hair loss is debated. Users report no significant improvement with theaflavin, while some find beta sitosterol helpful.

community Minoxidil: How It Changes the Scalp Hormone Environment

in Research/Science 80 upvotes 5 months ago

Minoxidil increases blood supply to the scalp, strengthening dormant follicles and extending the growth phase, but may increase scalp activity that can be countered with DHT blockers. Women experiencing side effects from finasteride or dutasteride for hair loss might consider alternatives like estrogen, especially if on birth control.

community How insane would it be to take estrogen until all your hair grows back, then getting off of it and taking fin or dut to maintain

in Chat 69 upvotes 7 months ago

Using estrogen for hair regrowth is considered ineffective and risky, with potential side effects like breast growth and hormonal changes. Alternatives like finasteride, dutasteride, and minoxidil are suggested, but estrogen is not recommended unless transitioning.

community High Estrogen and Test on Dut 5x a week

in Finasteride/Dutasteride 6 upvotes 1 year ago

A user experienced increased pimples and cysts after two years on dutasteride, possibly due to hormonal changes. Suggestions included seeing an endocrinologist, using supplements like boron and DIM, adjusting diet, and reducing body fat to manage side effects.

community Aromatise inhibitor for finasteride-estrogen side effects?

in Finasteride/Dutasteride 6 upvotes 4 years ago

A user experienced mild side effects from 0.5mg finasteride daily, including increased estradiol and minor gynecomastia. They are considering taking a low dose of exemestane to reduce estrogen levels.

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Learn

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learn Cyproterone

a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor

learn Overview

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